If I can't finish all the sub-tasks in a project in a single day, I may need to move that project to the Dream Catcher or Mental Lock Box to be completed at a later time. Wouldn't it make sense that all the sub-tasks associated with that project should remain attached to it? As it is, if I copy/move a project with Sub-Tasks to the Dream Catcher or Mental Lock Box, the Sub-Tasks get deleted. So when I bring the project out of hiding so I can work on it some more, my sub-tasks are gone and I have to re-enter them...if I can remember all of them. As a result I'm currently hesitant to use this feature because everything I enter could very well disappear if I click the wrong button...which I have accidentally done several times. If I remember not to click it, then in order to preserve my entries, I still have to keep the project in my Daily Targets even if it needs to be shelved. Seems like a liability for extra clutter, extra work, and a waste of a great feature.